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I was driving along looking for a small country store when I came upon "The Stonehouse of Campbellville" The Stonehouse owned by the Singleton family is a retail store which opened in 1976 selling leaded antique stained glass. Most of their windows are imported from England and are both secular and religious glass. They have a website with lots of information at www.thestonehouse.ca regarding all aspects of antique stained glass.
On the ceiling are examples of the "cartoons" that artists used to create such windows. Inside the store they have a special "light room", which had an amazing light coming through these beautiful windows.